637results about How to "Facilitate the realization of industrial production" patented technology

The invention relates to an epoxy resin adhesive modified by unsaturated polyimide and a preparation method thereof. A formula of the adhesive contains 80-85% of epoxy resin, 8-10% of unsaturated polyimide resin and 7-10% of curing agent in percentage by mass. By using the invention, the strength of the adhesive is effectively increased, the tensile shear strength at room temperature reaches up to 17.3 MPa and the brittleness of condensate is reduced; the epoxy resin adhesive provided by the invention is of very high practical value to the development of the adhesive industry, is favorable for realizing industrial production and has the advantages of simple preparation process and low cost. Broad application prospects are obtained in the fields of electronics, microelectronics, flexible copper clad laminates, flexible printed circuit boards, hard copper clad laminates, motors, aerospace and the like.

The invention relates to a preparation method for aromatic series polybenzimidazole resin film, comprising: (1) under function of polyphosphoric acid/phosphorus pentoxide system, condensation polymerization reaction is carried out to aromatic series amine and aromatic series dicarboxylic acids mixed according to mol ratio of 1:1 in nitrogen atmosphere; (2) after cooling, polymer is poured into water and broken down into powder in a resin pulper and washed over and over again by distilled water and soaked for 48 hours in NaHCO3 solution and washed till pH value shows neutral and drawn and filtered for drying in vacuum; (3) the polymer dried is dissolved in even solution prepared by organic solvent with mass percent of 5 percent, and then is dried at temperature of 130 DEG C for 12 hours, and is soaked in hot water for boiling and striping, and is dried in vacuum at temperature of 100 DEG C for 5 hours and then is obtained. The polybenzimidazole prepared by the invention has the advantages of big molecule weight, stable thermal stability, fine solubility and film forming performance, etc. The preparation has simple technology, low cost, convenient operation and can be finished in common equipments through preparation procedure.

The invention relates to a high-temperature-resistant modified epoxy resin adhesive and a preparation method thereof. The high-temperature-resistant modified epoxy resin adhesive comprises the following formula components by weight percent: 55%-58% of epoxy resin, 1%-6% of carboxyl-containing polyimide powder, 3.8%-4% of curing agent, 28.7%-30.5% of diluent and 6.3%-6.8% of terminal carboxyl nitrile rubber. The formula components are mixed evenly to obtain the adhesive. According to the preparation method, carboxyl-containing polyimide is added in an epoxy resin substrate, thereby effectivelyimproving the strength of the adhesive and reducing the brittleness of the cured material of the adhesive; the preparation method has the advantages of simple process and low cost, and is convenient for operation; and the preparation method has a high practicable value for the development of the adhesive industry and has a wide application prospect in multiple fields, such as electronics, microelectronics and the like.

The invention discloses a super-hydrophobic and oleophobic composite coating which comprises a super-hydrophobic and oleophobic primer coat layer and a super-hydrophobic and oleophobic finishing coat layer. The coating is characterized in that the super-hydrophobic and oleophobic finishing coat layer is located on the super-hydrophobic and oleophobic primer coat layer; the super-hydrophobic and oleophobic primer coat layer is coated by a super-hydrophobic and oleophobic primer coat which is a composition containing epoxy resin, an auxiliary A, extinction powder and a solvent; the super-hydrophobic and oleophobic finishing coat layer is coated by a super-hydrophobic and oleophobic finishing coat which is a composition containing fumed silica, an auxiliary B, an auxiliary C, a mixed solution A and a mixed solution B. Compared with the prior art, the super-hydrophobic and oleophobic composite coating disclosed by the invention not only has a super-hydrophobic performance, but also can resist greasy dirt and has a super-oleophobic performance as well as good wear resistance and stability; the preparation process is simple, and realization of industrialized production is facilitated.

The invention relates to a 2,2-bis[4-(2,4-diamidophenoxy)phenyl]hexafluoropropane high-temperature-resistant epoxy adhesive and a preparation method thereof. The 2,2-bis[4-(2,4-diamidophenoxy)phenyl]hexafluoropropane high-temperature-resistant epoxy adhesive is composed of a component A and a component B, wherein the component A is a copolymer prepared by reacting 2,2-bis[4-(2,4-diamidophenoxy)phenyl]hexafluoropropane and epoxy resin; and the component B is a homogeneous transparent solution with the solid content of 15-30%, which is prepared by reacting 2,2-bis[4-(2,4-diamidophenoxy)phenyl]hexafluoropropane and aromatic dibasic acid anhydride in a strong-polarity non-proton organic solvent and toluene. The preparation method comprises the following step: evenly mixing the component A and the component B in a mass ratio of 1:(1-2) at room temperature. The preparation technique is simple; and the adhesive has excellent comprehensive properties, can be widely used for bonding steel, copper, aluminum or any other metal with ceramic, glass, resin-base composite material or any other substrate, and has favorable industrialization prospects.

The invention discloses a method for preparing a multistage micron structure on a titanium implant surface and relates to a titanium implant. The method includes polishing the titanium implant surface, performing oil removing treatment, and cleaning; subjecting the titanium implant which is subjected to the oil treatment and cleaning to acid dipping treatment in a mixed solution containing a nitric acid, a hydrofluoric acid and hydrogen peroxide; subjecting the titanium implant surface to sand blasting treatment; cleaning the titanium implant which is subjected to the sand blasting treatment; subjecting the cleaned titanium implant to acid etching post-treatment in an acid etching solution; and subjecting the titanium implant to heat treatment and cooling the titanium implant to the normal temperature to obtain the titanium implant with the surface in the multistage micron structure. According to the method for preparing the multistage micron structure on the titanium implant surface, the contact area between the titanium implant and bone tissues is increased, osteoblast ingrowth is facilitated, and thereby the forming of bone closure is facilitated; processing devices are easy to obtain, the operation process is simple, the environmental pollution is small, and the industrialization is easy to achieve; and the appearance is abundant, and the hydrophilic performance is excellent.

The invention relates to a linear water-based polyurethane thickener containing hydrophobic side bases and a preparation method of the linear water-based polyurethane thickener. The preparation method is characterized in that 40 weight percent to 60 weight percent of dibasic alcohol polymers, 10 weight percent to 30 weight percent of diisocyanate and 0 weight percent to 5 weight percent of catalysts are mixed, under the condition of N2 gas existence and the temperature being 50 DEG C to 100 DEG C, the stirring is carried out for 1 to 6 hours, then, 10 weight percent to 30 weight percent of end-capping agents are added, under the condition of the temperature being 50 DEG C to 100 DEG C, the stirring is carried out for 1 to 6 hours, polyurethane prepolymers are prepared, then, 5 weight percent to 20 weight percent of chain extenders are added into the prepared polyurethane prepolymers, the stirring is carried out for 1 to 6 hours under the condition of the temperature being 50 DEG C to 100 DEG C, and the linear water-based polyurethane thickener containing hydrophobic side bases is prepared. The linear water-based polyurethane thickener and the preparation method have the characteristics that no solvent exists, the toxicity is low, the environment is protected, the preparation process is simple, and the like. The prepared linear water-based polyurethane thickener containing hydrophobic side bases is applicable to the thickening of water-based paint, and the obvious thickening effect is realized.

The invention relates to high-temperature resistant copper foil glue containing the following components: 5-15wt percent of trifluoromethyl-contained maleimide resin, 10-30wt percent of polyfunctional ethoxyline resin, 10-40wt percent of bisphenol A epoxy resin, 5-15wt percent of ethylene-contained polyetherimide, 5-10wt percent of curing agent and 25-45wt percent of organic solvent; the preparation comprises the following steps of: adding the trifluoromethyl-contained maleimide resin and the ethylene-contained polyetherimide to the mixture of the polyfunctional ethoxyline resin and the bisphenol A epoxy resin, stirring while heating for reacting, and then cooling to 30-50 DEG C; adding the organic solvent and the curing agent; evenly stirring to obtain the high-temperature resistant copper foil glue the homogeneous phase of which is transparent and clear. The high-temperature resistant copper foil glue has Tonset temperature reaching up to 415 DEG C and excellent comprehensive performance, can be applied to the high-tech fields of electronics and microelectronics, automobiles, electrical machines, aerospace and the like; moreover, the invention has simple preparation process, low cost, convenient operation and available reaction raw materials, thereby being beneficial to realizing industrial production.

The present invention relates to a preparation process of 1,5-pentamethylene diamine. According to the method, a seed liquid containing lysine decarboxylase strains is introduced during lysine fermentation, and mixed fermentation is carried out. The method is suitable for industrial production of 1,5-pentamethylene diamine, minimizes toxicity of pentamethylene diamine to microorganisms to avoid adverse effects on fermentation, makes the subsequent process more simplified, and has certain commercial value.

The invention discloses a method for treating nickel-containing electroplating wastewater and recovering nickel by electrolysis. The method has the characteristics of simple process, no secondary pollution, high removal rate and recyclable deposited metallic nickel. The nickel-containing electroplating wastewater is subjected to electrolysis treatment by an electrolysis treatment nickel-containing electroplating wastewater device, which comprises an electrolytic bath and an electrolyte stirring apparatus, wherein the anode adopts a titanium-based platinum electrode; the cathode adopts a nickel electrode or a graphite electrode; and a pH meter is arranged in the electrolytic bath. The method for treating the nickel-containing electroplating wastewater by electrolysis comprises the following steps: before the electrolysis treatment, putting the nickel-containing electroplating wastewater serving as an electrolyte into the electrolytic bath, and adding alkali solution into the electrolyte to adjust the pH value of the electroplating wastewater; and adding the aqueous alkali into the electrolyte during the electroplating to adjust the pH value of the electrolyte to between 6.0 to 9.0, and recycling the nickel precipitated from a negative plate by measuring the charge accumulation amount of the electrolyte.

The invention relates to the more monobromo-benzene oxygen radical substitutions even triazine flame retardance compound's preparation method. Its characteristic is: The reactant three will gather the chlorine cyanogens, the multi-bromophenols, shift the catalyst according to 1:2.5-3.1:0.01-0.1 a mole of allocated proportion to take the quantity, with the right amount organic solvent one and joins to a reactor, stir and cool it to 10 degree C below; Take the 5%-30% sodium hydroxide peroxide solution which mole of quantity sodium hydroxide compounds the weight percentage concentration with the multi-bromophenols, add by drops in the reactor stated, and maintain the system temperature not to surpass 10 degree C when adding by drops in the process; After the installment, heat the reaction material to 30-60 degree C ,and respond 1h-5h again; Then distillate to clean the resolve, cool, filtrate, the solid which the filtration obtains after the washing, drying is the system results in the product. This invention uses a method of 'a pot synthesis', the operation is simple, the pollution is reduced, the resolve may recycle repeatedly, the cost is small, and it is suitable for the industrialization production.

The invention relates to a method for preparing boron carbide silicon carbide composite ceramic and belongs to the technical field of ceramic materials. The boron carbide silicon carbide composite ceramic is prepared by mechanically alloying three-element mixed powder of boron carbide, carbon powder and silicon powder and sintering by a reaction hot-pressing technology, wherein the three-element mixed powder comprises 50 to 90 weight percent of boron carbide powder, 15 to 3 weight percent of carbon powder and 35 to 7 weight percent of silicon powder; and the molar ratio of the carbon powder to the silicon powder is 0.8 to 1.2. The high-compactness boron carbide silicon carbide composite ceramic can be obtained at low temperature without adding a liquid phase sintering aid. Silicon carbide which is obtained through in-situ synthesis in the sintering process of carbon and silicon has high purity and the crystal grains are small and dispersed uniformly, so the mechanical property of the ceramic is improved. The boron carbide silicon carbide composite ceramic prepared by the method has high compactness, high hardness and high high-temperautre mechanical property and can serve as an anti-impact and wear-resistant part of precise structure engineering.

The invention provides a severe plastic deformation method for manufacturing ultra-fine grain material, which comprises an equal-channel angular extrusion step. The method is characterized in that the severe plastic deformation method has the following processing steps, namely the preparation of raw material, homogenizing annealing, compression extrusion deformation, equal-channel angular extrusion deformation, repeated upsetting-extrusion deformation, and annealing treatment. The shapes and sizes of the material before and after the extrusion deformation are the same so as to realize the multi-pass accumulated deformation; combining the other technologies, the disadvantages during the manufacture process of the ultra-fine grain material are effectively avoided because of absorbing the advantages of a equal-channel angular extrusion method, thereby realizing that the uniform ultra-fine grain microstructure material can be obtained after less-pass upsetting-extrusion deformation; therefore, the uniform and stable ultra-fine grain bulk material is obtained, in addition, the productivity effect is increased obviously, the service life of an extrusion die is prolonged, the manufacturing cost is lowered, and the severe plastic deformation method is favorable for realizing large-scale industrial production at the same time.

The invention relates to pultrusion resin for a high temperature-resistant carbon fiber-reinforced cable core and a preparation method of the pultrusion resin. The resin comprises hydroxyl-containing and carboxyl-containing active polyimide resin (HCPI), polyfunctional epoxy resin, SR22000 organic silicon resin, thermoplastic bisphenol A phenolic resin, maleic anhydride, an active diluent, a curing agent and an accelerator. The preparation method comprises the following steps: putting polyfunctional epoxy resin, hydroxyl-containing and carboxyl-containing active polyimide resin, SR22000 organic silicon resin, thermoplastic bisphenol A phenolic resin and maleic anhydride into a reaction kettle, performing stirring reaction, adding the active diluent, performing the stirring reaction, then adding the curing agent and the accelerator, and uniformly stirring. The pultrusion resin provided by the invention has the advantages of convenient raw material sources, no solvent, environment friendliness, simple operation process and excellent comprehensive performance, is very suitable for a pultrusion process, is very suitable for manufacturing a high temperature-resistant carbon fiber-reinforced cable core composite material with excellent comprehensive performance by pultrusion, and has broad application prospects.

The invention relates to a method for preparing soematoglutide. A solid-liquid phase-binding fragment condensation scheme is adopted and includes conducting solid phase synthesis to obtain side chainprotecting peptide, conducting liquid phase fragment condensation to obtain fully protected semaglutide, then conducting cleavage to obtain crude semaglutide and conducting purification salt exchangeto obtain the semaglutide. A pseudoproline strategy is adopted to reduce by-products caused by racemization. Acccording to the method, impurities are reduced, the yield is improved, the synthesis timeis reduced, the waste liquid discharge is reduced, the synthesis cost is greatly reduced, and the method is very beneficial to industrial production.

The invention relates to a method for preparing alpha phase and beta phase silicon nitride powder by improved direct nitriding method. The method is mainly an improvement based on the existing direct nitriding method; metallic silicon powder and nitrogen react in a completely sealed reaction device; reaction gas is mixed gas of the nitrogen and inert gas (such as argon); and the inert gas has two functions of serving as shielding gas to prevent the silicon powder from oxidation and performing supercharging to raise seepage pressure of the nitrogen to promote nitriding of metallic silicon during reaction. The reaction speed of the metallic silicon and the nitrogen is controlled by adjusting the proportion of the nitrogen in the mixed gas to control the temperature in a reaction vessel, and a silicon nitride product with an objective constituent phase (an alpha phase and a beta phase) can be obtained finally. The method is simple in operation process, reduces energy and raw material consumption, does not require an additional diluent, a catalyst and the like, greatly saves production cost, and facilitates realizing industrial production.

The invention relates to an epoxy-based carbon fiber sizing agent emulsion, which comprises the following components: 55-78wt% of polyurethane structure-modified epoxy resin composition, 20-30wt% of surfactant, 0.5-2wt% of anti-oxidant, 1-2wt% of levelling agent and 0.5-1wt% of antifreezing agent. A preparation method comprises the following steps: pumping a bisphenol F epoxy resin reactant under vacuum, dehydrating until no bubbles can be generated, adding an isocyanate reactant to prepare an epoxy resin composition; mixing and homogenizing the surfactant and the anti-oxidant in a reaction vessel according to the above material fraction; and then gradually adding deionized water, a levelling agent and an antifreezing agent to prepare the sizing agent emulsion. The carbon fiber from the epoxy-based carbon fiber sizing agent emulsion has good convergence, wear resistance and toughness, the sizing agent resin has good chemical stability, and is in favor of long-term storage and quality guaranteeing of sizing carbon fiber; the preparation method has the advantages of simple technology and easy operation, the reaction raw material has the advantages of convenient source and low cost, and the epoxy-based carbon fiber sizing agent emulsion is in favor of realization of industrial production.

The invention relates to TGBAPOPP type matrix resin used for preparing an advanced composite and a preparation method of the TGBAPOPP type matrix resin. The TGBAPOPP type matrix resin comprises N, N, N', N'-quadriglycidyl-2, 2-double[4-(4-amidogenphenoxy) phenyl]dimethylmethane, o-cresol-formaldehyde epoxy resin, 2, 2-double[4-(4-maleimidephenoxy) phenyl]dimethylmethane, N-isopropyl-N'-phenyl ursol, 2, 2, 4-trimethyl-1, 2-di-hydrogenationquinoline, curing agent and organic curing agent, wherein the mass ratio of all the components is 100: (50-100): (10-30): (2-5): (2-5): (60-100) : (500-900). The TGBAPOPP type matrix resin, disclosed by the invention, has excellent overall performance and excellent wettability to glass fiber, carbon fiber, basalt fiber and aramid fiber, can be used for preparing advanced composites with excellent overall performance, and has a broad application prospect.

A waste and old road asphalt regenerating agent comprises the components in parts by weight: 20 to 45 parts of petroleum asphalt; 40 to 50 parts of aromatics-rich oil; 5 to 10 parts of biomass pyrolysis oil; 8 to 15 parts of rosin; and 2 to 5 parts of a thermoplastic elastomer. The invention also discloses a preparation method of the waste and old road asphalt regenerating agent.